[OPEN- EXTJSIV-266] root is undefined [Break On This Error] total = root.length,

When sending a DELETE or PUT request through a RestProxy extjs 4 seems to expect the deleted or altered record in return ("{success: "true", data: [{id: ... }]}") or it will fail. I would expect it to be enough to send a 200 OK response or {success: "true"}.

Subsequent calls to DELETE then results in the delete requests being sent to the first url ("resource/[idOfFirstEntity]")